AU3154901A - Data rate estimation in a communication system - Google Patents

Data rate estimation in a communication system

Info

Publication number
AU3154901A
AU3154901A AU31549/01A AU3154901A AU3154901A AU 3154901 A AU3154901 A AU 3154901A AU 31549/01 A AU31549/01 A AU 31549/01A AU 3154901 A AU3154901 A AU 3154901A AU 3154901 A AU3154901 A AU 3154901A
Authority
AU
Australia
Prior art keywords
spreading factor
communication system
signal
smallest
estimate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
AU31549/01A
Inventor
Marko Heinila
Ulo Parts
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Inc
Original Assignee
Nokia Networks Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nokia Networks Oy filed Critical Nokia Networks Oy
Publication of AU3154901A publication Critical patent/AU3154901A/en
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0262—Arrangements for detecting the data rate of an incoming signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J13/004—Orthogonal
    • H04J13/0044—OVSF [orthogonal variable spreading factor]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/70703—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation using multiple or variable rates
    • H04B2201/70705—Rate detection

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Communication Control (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)

Abstract

The present invention relates to a method and a circuitry for estimating a spreading factor and/or data transmission rate in a communication system that employs variable data transmission rates. A received transmission signal is analyzed in order to estimate noise variances for those spreading factors that are possible for a data frame in the signal. The estimate is based on information that is determined by assuming that the smallest possible spreading factor was used for the transmission of the signal. The estimates are then scaled by predefined constants, each of the constants depending on the respective possible spreading factor. The smallest one of the scaled estimates is determined, whereafter the most probable spreading factor of the received data frame is determined based on the smallest variance estimate.
AU31549/01A 1999-12-10 2000-11-28 Data rate estimation in a communication system Abandoned AU3154901A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB9929373.0A GB9929373D0 (en) 1999-12-10 1999-12-10 Data rate estimation in a communication system
GB9929373 1999-12-10
PCT/EP2000/011874 WO2001043330A2 (en) 1999-12-10 2000-11-28 Data rate estimation in a communication system

Publications (1)

Publication Number Publication Date
AU3154901A true AU3154901A (en) 2001-06-18

Family

ID=10866173

Family Applications (1)

Application Number Title Priority Date Filing Date
AU31549/01A Abandoned AU3154901A (en) 1999-12-10 2000-11-28 Data rate estimation in a communication system

Country Status (7)

Country Link
US (1) US7180932B1 (en)
EP (1) EP1238470B1 (en)
AT (1) ATE299312T1 (en)
AU (1) AU3154901A (en)
DE (1) DE60021206T2 (en)
GB (1) GB9929373D0 (en)
WO (1) WO2001043330A2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2381422A (en) * 2001-10-24 2003-04-30 Ipwireless Inc Code division multiple access receiver
US20060154633A1 (en) * 2003-01-29 2006-07-13 Hai Wang Uplink sinr estimation
US7397839B2 (en) * 2004-01-27 2008-07-08 Ntt Docomo, Inc. OFDM communication system and method
US8204923B1 (en) * 2006-10-31 2012-06-19 Marvell International Ltd. Systems and methods for scaling parameters
GB0712701D0 (en) * 2007-06-29 2007-08-08 Inc Icera Processing transmission in a wireless communication system
US8374219B2 (en) 2009-11-23 2013-02-12 Telefonaktiebolaget L M Ericsson (Publ) Blind spreading factor detection for wideband code division multiple access (WCDMA)
CN113644933B (en) * 2021-09-29 2022-05-10 中南大学 Adaptive direct sequence spread spectrum communication method, system and medium
CN114759947B (en) * 2022-04-11 2023-03-24 西安电子科技大学 Spreading factor detection method of multi-line linear spread spectrum signal under parallel transmission

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970013834A (en) * 1995-08-23 1997-03-29 사와무라 시코우 A computing apparatus of transmission rate
GB2330992A (en) 1997-11-03 1999-05-05 Nokia Mobile Phones Ltd Channel estimation in a variable data rate communication system

Also Published As

Publication number Publication date
WO2001043330A2 (en) 2001-06-14
US7180932B1 (en) 2007-02-20
EP1238470A2 (en) 2002-09-11
WO2001043330A3 (en) 2001-11-29
DE60021206D1 (en) 2005-08-11
GB9929373D0 (en) 2000-02-09
DE60021206T2 (en) 2006-04-27
ATE299312T1 (en) 2005-07-15
EP1238470B1 (en) 2005-07-06

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Legal Events

Date Code Title Description
MK6 Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase